Coupling for textile machinery.



Patented May- 29, 1900 a w ma $K iw (Application filed 'Aug. 28, 1899.)

J BROOK &. T LEACH COUPLING FOR TEXTILE MACHINERY.

-!,No Model.)

UNITED STATES PATENT OFFICE.

JOSEPH BROOK, or BRADFORD, AND THOMAS LEACI-I', or ROOHDALE,

' ENGLAND.

ooostme FGR TEXTILE MACHINERY;

SPECIFICATION forming part of Letters Patent no. 650,450, dated May 29, .1900.

Application filed August 20, 1899. i

To allwhom it may concern:

Be it known that we, JOSEPH BROOK, mechanic, residing at 337 Idle road, Bolton, Bradford, in the county of York, and THOMAS LEACH, machine-maker, residing at 190 Derby Terrace,Drake street, Rochdale, in the county of Lancaster, England, subjects of the Queen of Great Britain and Ireland, have invented a Tin-Roller Spring-Clip Coupling for Textile Machinery, of which the following is a specification.

This invention relates to improvements in couplings for joining up sections of tin rollers such as are used for the purpose of driving the spindles of spinning and winding frames, mules, and like machinery, the object being to provide a more efficient coupling than those hitherto in use.

In the old form of coupling the bosses were very apt to split when tightening up, and from the necessity of putting them on slack they always ran out of true. Flats had also to be made on the shafts for the set-screws to tighten against, which, together with the backlash in running, caused the set-screws to be jumped up at the ends, which rendered it awkward and almost impossible to withdraw the shaft for repairs. i

The essential features of our invention are thatinstead of the usual disk, to which are soldered the tin roller and central boss with its slots or set-screws, or both, for gripping the shaft or arbor, we have a couple of disks se-- curely fastened together by screws, bolts, or equivalent means, which are kept a fixed distance apart by shouldering or by placing upon them between the disks ferrules or disfiance-pieces, so that they can be screwed up tight together. The said screws are set parallel with the central shaft and more or less midway between the center of the disks and their perimeter-s. Across these and at right angles with their axes and between the disks we place two metal plates or clips, which embrace the shaft and aforesaid screws when drawn together by means of a lifter-plate and forcing-screw arrangement, to be more particularly described later, thus making an exceedingly firm contact with the shaft, which rotates the disks, and consequently the rollers, in a perfectly true manner.

Serial No. 728,565. No model.)

We will now proceed to describe our inven= tion more particularly by reference to the accompanying drawings, in which Figure 1 is an end elevation of our improved coupling as it appears from within the roller with steady-plate B removed; Fig. 2, a sectional view in plan of the coupler-clip and driving-pins, and Fig. 3 a plan of the coupler and clip-plates. Fig. 4.indicates a different form of driving pin.

Similar letters represent similar parts'in all the figures. Referring to the drawings, A is the main disk, to which the tin roller is soldered and to which are securely fixed what may be termed the driving pins or screws (3.

E is the usual connecting shaft or arbor, on which A is slipped loosely, havinga sliding fit. H P are the two metal clips,which are bored to fit the arbor A when nipped together by the lifting-screws K N N, so as to geta tight grip of the shaft. By the same movement the clips H P are also made to partially embrace the driving-pins C in an easy manner without binding, being suitably hollowed or recessed near the ends atX for this purpose. Between the inner surfaces of the clips H P are two springs S S, fixed in recesses in the inner faces of the two clips and kept in position by the two lifting-screws NN, passing through their centers. The object of the springs is to keep the clips apart by the ex= tension of the springs whenever the lifting screw K is slackened for the purpose of releasing the coupler on the arbor E. The lifting arrangement is shown by the combination of a lifting-screw K, lifter-plates J J, and supplementary lifting-screws N N, and springs S S. The lifter-plates J J being laid on the outside of the clips HP, are coupled together by the supplementary screws N N, passing through them and through the clipsHP, and the inclosed springs S S at points intermediate between the central arbor E and the driving-pins 0. They may be placedin other positions, but we find this to be the best way. Through one of the lifter-plates J we insert a lifting-screw K, the point of which rests on the back of the clip H. The act-ion is then as follows: When the lifting-screw Kis tightened, the lifter-plate J and the clip H are forced asunder, and the lifting-plate J being attached to the lifter-plate J on the back of the opposite clip P on the other side of the shaft E by means of the supplementary screws N N clip 11 is pressed against the arbor E on one side and clip P is drawn into contact with the arbor E on the other side, thus providing an intense centripetal pressure for gripping the shaft until the lifter-screw K shall be slackened, when the clips J and J are forced apart by the expansive action of the springs S S. We sometimes dispense with the lifter-plate J altogether. The supplementary screwheads then test against the back of the clip P. l I

In the modification shown in Fig. 4, D is a distance tube or ferrule on the driving-pin G to take the place of the driving-pins C, thickened in the body and shouldered down at the ends, as in Fig. 2, so as to allow of them being fixed firmly into the main disk A and the steady -plate B, which is slipped loosely on the shaft E with a sliding fit similar to plate or disk A. lVe prefer the shonl dering of the pins to the use of ferrules as being a better arrangement. Figs. 2 and 3 show plainly the disk B fixed in position. The whole of the coupling is made of metal ormetals suitable for the purpose.

It will be seen that our invention obviates all the defects referred to, as we get a strong friction-grip equally all around the shaft. The disks are perfectly true and provide more bearing-surface for the rollers. They may therefore be run at much higher speeds. Also by reason of the clips being adjustable there is no rusting of the shaft to the coupling, as in the old style. There is greater fa cility in fixing or removing rollers and better support to the roller ends when fixed to the coupler.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. A coupling for tin rollers for spinning and like machinery composed of two disks, driving-pins, spring-clips and lifting-screw device for gripping the shaft substantially as and for the purpose described.

2. In a coupling for tin rollers for spinning and like machinery the combination with disks A and 13 carrying the shell of the roller and with the central shaft E, of two clips II and P embracing said shaft, driving-pins connected to disks A and B, screws N passing through said clips and engaging with lifterplates J, J, screw K passing through plate J and engaging with clip H, and springs S cmb'racing screws N and' abutting against the interior faces of clips H and P, substantially as described.

3. In a coupling for tin rollers for spinning and like machinery the combination'of clips II and P embracing shaft E, screws N passing through said clips and plates J and J, and screw K passing through plate J and engaging with clip I-I substantially as described.

4. In a coupling for tin rollers for spinning and like machinery the combination of clips H and P embracing shaft E, screws N passing through said clips and plates J, J screw K- passing through plate J and engaging with clip H, and springs S embracing screws N and abutting against the interior faces of clips H and P substantially as described.

5. In a coupling for tin rollers for spinning and like machinery the combination of loose disks A and B, driving-pins connected to said disks, with clips H and P engaging with shaft E substantially as described.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

I JOSEPH BROOK.

THOMAS LEAOH. \Vitnesses:

GEORGE HY. FIRTH, A. J. SUGDEN. 

